2.11 Response time
The response times of the System SLIO safety modules are listed below. The response
time of the safety modules is included in the calculation of the fail-safe system response
time.
The response time specifies the time between a signal transition at the digital input and
the reliable availability of the safety message frame on the backplane bus.
The response time specifies the interval between the receipt of a safety message from
the backplane bus and the signal transition at the digital output.
These response times are required for plant design. Hereby you can determine whether
the maximum error tolerance time of a process is not exceeded. Here, the following cases
are to e distinguished, which are described below:
n
Error-free case
n
Existing error
n
Arbitrary run times at single errors
2.11.1
Error-free case
In the error-free case, it is assumed that none of the time monitors are responding and
the passage of a signal from the input terminal of a System SLIO safety IN to the output
terminal of a System SLIO safety OUT is considered:
General
Response time safety dig-
ital inputs
Response time safety dig-
ital outputs
Maximum response time
of the system
VIPA System SLIO
Product description
Response time > Error-free case
HB300 | SM-S | 02x-1SD10 | en | 20-02
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